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A rectangle has sides measuring (4x + 5) units and (3x + 10) units. Part A: What is the expression that represents the area of the rectangle? Show your work to receive full credit. (4 points) Part B: What are the degree and classification of the expression obtained in Part A? (3 points) Part C: How does Part A demonstrate the closure property for polynomials? (3 points)
(4x+5)(3x+10) DO YOU KNOW FOIL?
cool, do it
I need help
ok so 12x^2 + 40x + 15x + 50
What about that?
do you get how I used foil to get that?
Not really... for area dont you just multiply the two together
When I multiplied the two together I got 12x^2+55x+50
This is the expression for part a
Oh ok so for part b...
Well the degree is the highest exponent, so 2 and classification I would assume quadratic, what classification do they want you to do. What did you learn
I think it would be a polynomial degree of 2 because thats what we are learning about
so part c...
perfect. now part c do you know what closure is?